Arcing fault detection system

Details Arcing fault detection system Arcing fault detection system

1996-02-13

1997-10-28

Arana, Louis M.

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

For fault location

324520, G01R 3108

Patent

active

056821018

ABSTRACT:
A system to detect arcing faults in an electrical distribution system with a line conductor connected to a utility power transformer. The system monitors the rate of change of electrical current in the line conductor and produces a signal which represents the rate of change. The system produces a pulse each time the rate-of-change signal exceeds a selected threshold, filters the rate-of-change signal and/or the pulses to substantially eliminate a signal or pulse which represents changes in the electrical current outside a selected frequency range, monitors the remaining pulses to detect when the number of pulses that occur within a selected time interval exceeds a predetermined threshold, and generates an arc-fault-detection signal in response to the occurrence of a number of pulses which exceed the threshold within the selected time interval.

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